Is God fair in the way He allocates His goodness and His severity? Indeed, human nature, unable to grasp God's purposes, challenges the morality—if you will, the "political correctness"—of God's actions!
Our civilization's pundits—whether abolitionist, humanist, rightist, elitist, feminist, moralist, or whatever—would summon God before the bench to answer their questions. Their indictment of God would fill volumes. Dangerous business, that, for Paul carefully warns us that we dare not "find fault" with God (Romans 9:19). To accuse Him of being unfair or capricious in His dealings with mankind is to forget that He is not bound by the sensitivities of our times, not fettered by the Western world's humanistic self-absorption with human rights, equality, democracy.
God will not limit His field of options—in effect placing Himself in a straitjacket—to avoid offending a humanity that lacks His Spirit and is therefore wholly incapable of sharing His perspective. He is reproducing Himself! He will not constrain His activities in bringing that sublime purpose about by the "isms" of these times, or for that matter, of any historical milieu.